new Float:RandomSpawn[][4] = {
    {coordx, coordy, coordz, coorda},
    {coordx, coordy, coordz, coorda},
    {coordx, coordy, coordz, coorda}
};

public OnPlayerSpawn(playerid)
{
    new rands = random(sizeof(RandomSpawn));
    SetPlayerPos(playerid, RandomSpawn[rands][0], RandomSpawn[rands][1], RandomSpawn[rands][2]);
    SetPlayerFacingAngle(playerid, RandomSpawn[rands][3]);
    return 1;
}